Weed doesnt really "FRY YOUR BRAIN", and if its not a cardiovascular sport, then you shouldn't really worry about it because you don't really need a whole lot of lung endurance. It makes some people better skiers, just makes shit hella steezy for some, like my brother. I don't really smoke that much because I kinda got bored of it; when I smoke I kinda just get tired and hungry and after I eat a shitload from the munchies I feel gross and way too full.
I agree about putting smoking in edits though its kinda played and I would much rather see another kind of lifestyle shot like cool and unique shots of nature and shit like that.